I thought about my answer to this and decided to leave it to Gilt Man's Style Director, Josh Peskowitz (sometimes guys receive advice better when it comes from a man)!
"The math here isn't complicated. You want something that is light, but will also give you some protection when the showers come. There are plenty of great options based on army field coats and parkas...and don't be afraid of a little color (think red or yellow) in your selection."
I love the chambray hooded jacket. It can function as a denim jacket but also protects you from undesirable elements (think April showers and windy spring nights).
Mark McNairy is a genius when it comes to giving old staples new life, and this neon anorak is just one example of his tongue-in-cheek reinterpretation of American classics. Matter of fact, I think I'll take one for myself!